222results about How to "Short equilibration time" patented technology

A device for on-line testing solved gas distribution constant in transformer oil by gas-phase chromatography includes a constant temperature water-bath, a magnetic mixer, an oil-gas balance bottle, a six-way valve and an on-line gas-phase chromatograph to accurately test solved gas distribution constant in transformer oil under different temperatures.

A built-in high-speed spindle double-sided on-line dynamic balance device and a control system thereof belong to the fields of the precision and ultra-precision processing and the automation. The reconfiguration of the unbalance amounts of two balancing heads on a spindle system is controlled to change the unbalanced state of the system. The balance disc of each balancing head is pushed by an oil bag-friction resistant reed mechanism, wherein a 120-degree angle is formed between the oil bag and the friction resistant reed circumferentially. A reset reed is used to ensure that the balance discs are closely meshed with the spindle in normal operation. In the separation process, the reset reed is used to ensure that the balance discs perform differential motion relatively to the spindle stably. The control system can be used to realize the schemes such as multi-path signal simultaneous acquisition, signal parallel processing and multi-path signal parallel output and reduce the balance time; and the system combines the oil drainage advanced angle to output control signals, adjust the positions of the four balance discs respectively and increase the control accuracy.

A method of a pretreatment that is a desilication of bauxite surface by a reverse flotation relates to a method of the flotation towards diasporic bauxite, including the courses of grinding, a solid-liquid separation and the reverse flotation. The method is characterized in that before the desilication of the bauxite mineral by the reverse flotation, the surface of the mineral is pretreated by hot alkaline solution. The method of the intention can make a concentrate grade (an alumina-silica ratio) after the desilication by the reverse flotation improved 0.5 to 1 than the concentrate grade after the ordinary desilication by the reverse flotation and make a coefficient of recovery increase by 2 percent to 8 percent. The chemical entrainments of coarse particles are greatly reduced. A concentration adjustment of the flotation system of the present invention is convenient, and the balancing time is short, at the same time novel water can be used for further washing a red mud, which can reduce an alkalescence of the red mud and decrease the pollution influence on environment. The water after washing red mud is added into a grinding machine for the treatment of ore surface as the recycle utilization.

The invention provides a multi-component direct-competitive immunoassay method for labeling haptens by using quantum dots of micromolecule organic matters and relates to a multi-component direct-competitive immunoassay technology. The multi-component direct-competitive immunoassay method comprises the following steps of: labeling different target analyte haptens by using the highly-efficient water-soluble quantum dots with different fluorescence emission wavelengths, taking polystyrene magnetic microspheres on which different antibodies are fixed and commonly dispersing corresponding target analyte prototypes as well as the haptens labeled by the corresponding quantum dots in phosphate buffer solution to carry out competitive immune response; and quickly separating the polystyrene magnetic microspheres from a liquid phase in a magnetic field by using a reaction balance system, carrying out fluorescence scanning or multi-wavelength detection on the liquid phase under the excitation of ultraviolet light with the same wavelengths and establishing the multi-component direct-competitive immunoassay method for quickly detecting the haptens labeled by the quantum dots of the various target analyte micromolecule organic matters according to the principle that the ratio of the characteristic fluorescence intensity of labeling the haptens by using the ratio of the fluorescence intensity of the different quantum dots in a prototype system to the fluorescence intensity of corresponding blank control is proportional to the concentration of a corresponding target analyte.

The invention discloses a process for separating and recovering minim organic solvent from waste water using ion liquid consisting of, mixing hydrophobic ionic liquid with aqueous solution of organic solvent whose concentration is lower than 0.1-10 wt% by the volume ration of 1 : 1-10, fully stirring and depositing for stratification, gathering the organic solvent in the aqueous phase into ionic liquid phase, separating the ionic liquid phase, evaporating the organic solvent in the ionic liquid through decompression, thus achieving the goal of reclaiming organic solvent.

The invention discloses a capillary electrophoresis analysis system utilizing a micro-injection pump to drive liquid flows. The capillary electrophoresis analysis system comprises a direct-current high-voltage power supply, a nanoliter sample-injection valve with a built-in nanoliter sample ring, the micro-injection pump, a capillary three-way valve, a separation capillary, a detector and an electrophoresis waste liquid bottle with an electrophoresis buffer solution and a bottle plug. The capillary electrophoresis analysis system utilizes the micro-injection pump to drive liquid flows at a flowing rate of nL/min so that the liquid flows can integrally move in the capillary from a positive pole to a negative pole, and the liquid flows driven by the micro-injection pump replace electroosmotic flows so that all ingredients of the sample are separated because of different electrophoresis speeds. The capillary electrophoresis analysis system has the characteristics of high separation efficiency, fast analysis speed, simple processes and good reappearance.

The invention is applied to the technical field of rare earth metal adsorption, and in particular relates to a metal organic framework material with a petal-shaped core-shell structure and a preparation method and application thereof. The preparation method is as follows: 1) zirconium tetrachloride, 2-aminoterephthalic acid, glacial acetic acid and N, N-dimethylformamide are taken and stirred at room temperature, then transferred into a hydrothermal reaction kettle to react for 24 hours at 120 DEG C, cooled to room temperature, and washed to obtain UiO-66-NH2; and 2) weighing and ultrasonically dispersing the UiO-66-NH2 in absolute methanol, adding PVP for stirring, adding zinc nitrate hexahydrate for stirring, then adding 2-methylimidazole, stirring and centrifugally drying to obtain petal-shaped core-shell structure adsorbent UiO-66-NH2@ZIF-8. The preparation method is simple, green and pollution-free, and the prepared adsorbent has high separation and enrichment efficiency for rareearth elements and practical applicability.

The invention provides an enrichment-thermal desorption-chromatography separating unit. The enrichment-thermal desorption-chromatography separating unit is composed of a rapid enrichment thermal desorption device, a sample introduction device, and a rapid separating device; the rapid enrichment thermal desorption device is used for realizing low temperature enrichment of target components in gas samples using an adsorption tube at the action of low temperature of carbon dioxide gas, and realizing rapid heating thermal desorption via a heating wire, wherein an adsorbent is arranged in the adsorption tube, and the adsorption tube is enwound by the heating wire; after enrichment and desorption, the target components are delivered into the rapid separating device via the sample introduction device; a low temperature carbon dioxide gas cooling chromatographic column is adopted in the rapid separating device, relatively low chromatographic column initial temperature and relatively high heating rate are achieved via combination of the low temperature carbon dioxide gas cooling chromatographic column with a rapid heating module, so that high separation effect, extremely high analysis speed, and high peak capacity are achieved. The enrichment-thermal desorption-chromatography separating unit is capable of realizing on-line enrichment, rapid desorption, and super rapid gas chromatography of trace components in gas samples.

The invention discloses an on-line coupling system for a dynamic liquid-liquid solid imprinted microextraction-liquid phase chromatogram, which comprises a magnetic agitator, a water bath bottle, an extracting bottle, a draft tube, a peristaltic pump, a high-pressure six-way switching valve, a molecularly imprinted solid phase extracting material, a high-pressure six-way sample valve, a quantifying cup, a sample needle, a liquid phase chromatographic pump, a chromatographic column, a detector, a liquid phase chromatogram and the like. Through the coupling of a dynamic liquid-liquid solid imprinted microextracting device and the liquid phase chromatogram, the on-line overall processes of the preenrichment, the extraction, the desorption, the separation and the detection of a target analytein a water phase sample are achieved. By using the system, the universality of liquid-liquid extraction, the high selectivity and the high enrichment capability of a molecularly imprinted solid phasemicroextraction technique, the efficient separation capability and the high sensitivity of the liquid phase chromatogram are combined; the analysis degree of automation is improved; the analysis timeis shortened; the accuracy and the precision are improved; and the system can be effectively applied to the analysis and the detection of a trace organic matter in a complicated sample.

A micropore structure of a microplate strip comprises round micropore in a standard format. A plurality of convex tooth strips in the same shape and proportion are arranged in an equant manner on the annular wall of the lower part of the inside of each micropore, the bottoms of the convex tooth strips are connected with the bottom of the micropore, and the sides of the convex tooth strips are connected with the annular wall of the micropore. The surface area formed by the convex tooth strips convex inward is much greater than the surface area of the inner cavity of the conventional micropore, so the solid-liquid interface of the same volume of reaction solution has a greatly increased reaction area that is favorable for complete immunoreactions, and luminous reaction or enzyme catalyzed reaction and contributes to the great reduction in time for reaching reaction equilibrium, improvement in detection flexibility and reduction in time for detection; the convex tooth strips improves both the reaction area and an optical signal compared with the conventional micropore structure and increases the strength of the detection optical signal of a luminometer; the top parts of the convex tooth strips are inclined sectors which are capable of reflecting the optical signal of the luminous reaction upward to a probe of the luminometer, and compared with the reaction of the micropore side wall of the conventional microplate strip, the optical signal of the probe is strengthened considerably and the flexibility of a method is improved.

The invention discloses a technology for preparing clathration adsorbing material by utilizing raw material containing calcium as the skeleton. The raw material containing calcium (calcium oxide, calcium chloride, calcium sulphate, calcium carbonate, etc.) in the medium of a colloidizing agent is mixed with sodium carbonate or carbon dioxide in the air to react in water solution. An acid red 138 organic matter is adopted as clathration material and precipitation and separation are carried out to prepare calcium-based adsorbing material, thereby being used for absorbing and separating dyes, organic pollutants, heavy metals, and the like, thus having important application value in the fields of industrial waste water disposal, useful resource recovery, etc. The technology can utilize waste water and wastes of enterprises as raw materials to realize the resource recycling of wastes. The technology of the invention has the advantages of low cost of raw materials, the simple preparation method, materials with good absorbing performance, low processing costs and easy settlement separation, and the like while waste residues can be dissolved by acid to retrieve useful materials.

The invention discloses a fire pump discharge pressure full-automatic balancing system, which comprises a CPU microprocessor, a power isolation voltage stabilizing module, a power isolation module and an operation panel, wherein the operation panel and the power isolation voltage stabilizing module are respectively connected to the CPU microprocessor; the fire pump outlet pressure full-automatic balancing system also comprises a pressure sensor connected to the CPU microprocessor through an operational amplifier, a rotational speed sensor connected to the CPU microprocessor through a photocoupling module; the power isolation module is respectively connected to the pressure sensor and the rotational speed sensor; and the CPU microprocessor is connected to an automobile ECU accelerator control port through a high-isolation photocoupling amplifier. Compared with the prior art, the fire pump outlet pressure full-automatic balancing system has the advantages of using the method for controlling the vehicle-mounted fire pump pressure through changing the rotational speed of an automobile engine to automatically balance the working pressure of the fire pump under the set pressure of a user, thereby changing a plurality of defects caused by manual pressure adjusting and mechanical pressure balancing of the vehicle-mounted fire pump. The fire pump outlet pressure full-automatic balancing system has the advantages of accurate balancing pressure numerical value, short balancing time and easy mounting.

The invention discloses a method for separating palladium and copper from a solution containing copper, cobalt and nickel. The method employs acylthiourea as an extractant and melted wax as a diluent, Pd and Cu in the copper cobalt nickel palladium system can be selectively separated with a high recovery rate (the recovery rate of Pd and Cu can reach 99.9%) by controlling an acidity of copper cobalt nickel palladium system. According to the invention, the method for extracting palladium has the advantages of short balance time, high enrichment degree and fast phase-splitting; palladium and copper can be continuously extracted and separated from an acidic aqueous solution containing palladium at a time. The extractant enables a recycling use, and has small harm on environment, which has significant meaning for improving the recovery rate of non-ferrous smelting of the precious metals.

A target control method of a liquid-type on-line autobalance device comprises the following steps: extracting a frequency doubling signal of measured equipment from the received real-time vibration signals; calculating the unbalance magnitude and phase of the measured equipment by using the frequency doubling signal; converting the unbalance magnitude to distributed data of liquid in a liquid storage chamber when a balancing device offsets the unbalance magnitude, and forming time control amount of liquid transferring in the liquid storage chamber by liquid infusing or gas driving; according to the unbalance magnitude and phase, dividing the time control amount into the control duration of the liquid storage chamber; and outputting a control command based on the control duration of the liquid storage chamber to control the infusing or flowing of liquid in the liquid storage chamber. The control method can offset vibration, and enables the measured equipment to keep accurate dynamic balance during the operation. The invention further comprises a target control system, which enables the vibration value of the measured equipment to be reduced monotonically, and saves the balance time.

The invention belongs to the field of rare earth hydrometallurgy and the field of ionic liquid extraction, and particularly relates to a method for extracting a rare earth element with N-octylpyridinium tetrafluoroborate. According to the method, an aqueous solution containing a light rare earth element is used as the feed solution, the acid feed solution is mixed with the N-octylpyridinium tetrafluoroborate to conduct liquid-liquid extraction, and the mixed solution obtained after extraction is subjected to centrifugal separation so that an organic phase loaded with rare earth and raffinate can be obtained. A back washing agent is adopted to reversely extract the organic phase loaded with the rare earth, and the mixed solution obtained after reverse extraction is subjected to centrifugalseparation to obtain a pure rare earth solution and recycled ionic liquid. By adoption of the method, extraction efficiency is high, extraction equilibrium time is short, no emulsion phenomenon exists, and operation is easy. Moreover, the N-octylpyridinium tetrafluoroborate has hydrophobicity and cannot be dissolved with the aqueous solution, and thus organic phase losses caused by aqueous phase entrainment or dissolution can be reduced.

The invention relates to a production method and a production device of chemical products, in particular to the production method of doubly labeled water consisting of deuterium and heavy oxygen O<18> enriched by a water reification method as well as a water rectification device thereof. The rectification device provided by the invention consists of a rectification tower in multilevel series or in multilevel and parallel series; each level of the rectification tower are connected in phase transition way; the connection way is to transport the steam in tower bottom to the top of the lower tower by using pressure difference and the steam is condensed to be liquid phase to enter lower level tower; ascending steam of the lower tower top is condensed to be liquid phase and then flows into higher level tower top automatically. In the invention, as a reboiler at the tower bottom adopts falling film evaporation, the tower bottom is dry all the time without the retention of liquid to greatly save the balancing time. On the other hand, as no rotating parts such as a pump, etc. is adopted, the possible troubles caused by leakage, power failure, mechanical fault, etc. can be avoided to ensure constant and reliable operation of the system, which is important for isotope separation.

The invention discloses a method for removing lead in a water body by using magnetic pig manure biochar. The method comprises the steps as follows: magnetic pig manure biochar is added to the lead-containing water body, the pH value of the water body is controlled between 2 and 7, and constant-temperature vibrating treatment is performed to adsorb lead in the water body. The magnetic pig manure biochar is prepared in the following steps: (1) pretreated pig manure is subjected to high-temperature pyrolysis in nitrogen and pig manure biochar is obtained; (2) a pig manure biochar dispersion liquid is prepared, a ferric iron salt solution and a ferrous iron salt solution are mixed and stirred, and an iron salt mixed solution is prepared; (3) the pig manure biochar dispersion liquid and the iron salt mixed solution are mixed and stirred, the pH value is adjusted, boiling, filtration, washing and drying are performed, and the magnetic pig manure biochar is obtained. The method has the advantages of being simple to operate, low in cost, capable of quickly and efficiently adsorbing lead, easy in separation and recovery, reusable, environmentally friendly and the like.